Structures Dynamic Property Analysis of Elastic Composite Cylindrical Rolling Element

Abstract

Elastic composite cylindrical roller bearing is a novel type of roller bearing whose rolling element is designed by innovating the rolling element structure of cylindrical roller bearings. For the purpose of investigating the dynamic properties of the rolling elements with different structural parameters and solving the modes of elastic composite cylindrical rolling element with different filling degrees, first, this study compares elastic composite cylindrical rolling element to solid cylindrical rolling element, in terms of natural frequency and vibration mode. Next, the integration time step is determined, based on the natural frequency of the vibration in the Y direction, the response of various rolling element, under impact loads, is solved. Furthermore, the laws of the energy changes and nodal displacement variations of rolling element are explored, at different filling degrees. Finally, adopting the decay method, the damping ratio of elastic composite cylindrical rolling element, under different structural parameters and external loads, is calculated. According to the results, with the increase of filling degree, the natural frequencies of various orders of elastic composite cylindrical rolling element gradually declined. The damping ratio of rolling elements decreased, as the filling degree increased, while it could be changed by adjusting the structural dimensions of rolling elements. The analysis results of this study provide some theoretical reference for studies on the parameter optimization of rolling element structures, the vibration and noise reduction of elastic composite cylindrical roller bearings.

Research on Elastic Composite Cylindrical Roller Bearing Contact Fatigue Based on the Subsurface Stress

“…Through the structural innovation design of cylindrical roller bearing, PTFE material is embedded in the deep hollow cylindrical roller to form an elastic composite cylindrical roller structure [17,18], which increases the elasticity of the cylindrical roller, so as to increase the contact area between the roller and the inner and outer rings, reduce the contact stress between the roller and the raceway, improve the safe service life and bearing capacity of the cylindrical roller bearing, and also have obvious effect of vibration reduction and noise reduction. As a new type of cylindrical roller bearing, elastic composite cylindrical roller bearing [19][20][21] also has the problem of fatigue failure. Studying its subsurface stress is helpful to understand the rule of fatigue failure.…”

Study on contact and vibration characteristics of composite cylindrical roller bearings

“…For the study of composite cylindrical roller bearings (CCRB), Yao et al (2013aYao et al ( , 2013bYao et al ( , 2020Yao et al ( , 2021 proposed the technique of embedding PTFE into hollow roller to increase its contact characteristics for the investigation of CCRB. The contact between a single roller and the raceway was established using ABAQUS software, and the impact of load on the contact characteristic parameters was examined by Yu et al (2015) and Yu et al (2019).…”